Re: The difference between T[] opIndex() and T[] opSlice()

[Paul Backus via Digitalmars-d-learn]

On Monday, 2 October 2023 at 20:34:11 UTC, Salih Dincer wrote:

In an old version (for example, v2.0.83), the code you implemented in the places where Slice is written above works as desired. In the most current versions, the parameterized opIndexAssign(T value) gives the error:

onlineapp.d(51): Error: function `onlineapp.Matrix!double.Matrix.opIndexAssign(double value)` is not callable using argument types `(double, ulong)`

onlineapp.d(51):        expected 1 argument(s), not 2

**Source:** https://run.dlang.io/is/TPAg5m

I don't know what's wrong in your example but this works for me:

```d
struct S
{
    void opIndexAssign(int value)
    {
        import std.stdio;
        writeln("assigned ", value);
    }
}

void main()
{
    S s;
    s[] = 7;
}
```